android pixel 2

pixel density and screen fitThis address: Http://blog.csdn.net/caroline_wendyThe variety of Android devices is often required to adapt to different screens to get the hardware screen pixel and density in a way: Displaymetrics dm = new Displaymetrics (); Getwindowmanager (). Getdefaultdisplay (). Getmetrics (DM); int widthpixels= dm.widthpixel

) (Dipvalue * scale + 0.5f);}public static int Px2dip (context context, float Pxvalue) {Final float scale = Context.getresource (). Getdisplaymetrics (). density;return (int) (Pxvalue/scale + 0.5f);}public static int dip2px (context context, float Dipvalue) {Final float scale = context.getresources (). Getdisplaymetrics (). density;return (int) (Dipvalue * scale + 0.5f);}public static int Px2dip (context context, float Pxvalue) {Final float scale = Context.getresource (). Getdisplaymetrics (). d

Displaymetrics Class-A Structured description of a display's general information, including its size, density, and character scaling ratio. Public float density; // screen pixel density value. The density value indicates the number of display points per inch, which is different from the resolution. Android has the following screens: Qvga and wqvga screens density = 120; Hvga screen density = 160;

In the game we play we often see some of the effects of images, such as translucent and other effects. To achieve this translucent effect is not difficult, we need to understand the operation of image pixels.Don't be afraid, actually bitmap in Android gives us the basic way to manipulate pixels.We can get the pixel of the image through the Getpixels () method and put it in an array, and we can manipulate th

Recently, I am working on Image Processing on Android and directly operating on pixels on Android. Unexpectedly, some unexpected things have occurred. The getpixel method of Bitmap class obtains all negative pixel values. It should have been black, that is, 0, and all values have changed to-16777216, which is very strange. However, it is quite special to study th

(120/160/240)In Android, 1pt is roughly equal to 2.22SP. above for reference, if the UI can provide the best design in SP, and if there is no concept of SP in the design, the developer can also take approximate values by appropriate conversion. Android supports all of the following units.PX (pixels): The point on the screen.In (inches): unit of length.MM (mm): unit of length.PT (lb): 1/72 inches.DP (densit

This article is an example of the Android programming implementation based on bitmap to obtain image pixel data methods. Share to everyone for your reference, specific as follows: The references on the Internet are: int[] pixels = new Int[bit.getwidth () *bit.getheight ()];//saves an array of all pixels, with a picture wide x high bit.getpixels (Pixels,0,bit.getwidth ( ), 0,0,bit.getwidth (), Bit.geth

(120/160/240)In Android, 1pt is roughly equal to 2.22SP.For reference, if the UI can provide the best design in SP, if there is no concept of SP in the design, the developer can also take approximate values by appropriate conversion.In the past, programmers typically designed computer user interfaces in pixels. For example, you define a form field with a width of 300 pixels, a space between columns of 5 pixels, an icon size of 16x16 pixels, and so on

Android is self-adapting to screen size and density. Android provides the following folders to store image resources in order to ensure app interface effects on different screens. Different folders correspond to different pixel density picture resourcesDRAWABLE-LDPI:120DPI around the screen (low density)Drawable-mdpi:160dpi or so screen (medium density)The drawab

In the layout file of Android, dp is often used as the width and height of the control, but in Java code, the size unit obtained by calling the getWidth () methodThe difference is pixel px. The two units have obvious differences: dp is related to the screen density, while px is irrelevant to the screen density. Therefore, twoMutual conversion between users. The sample code is as follows:Public int Dp2Px (Co

[Android] Chapter 2 (2)-common public attributes of layout controls, Chapter 2 of android Category: C #, Android, VS2015; Created on:I. Introduction The layout controls in Android appli

medium pixel density.Because the default target density is the medium pixel density, when a user has a low pixel or high pixel density screen, Android Browser and WebView will scale the page, so that they can be displayed in an appropriate size on a medium

[Android] Chapter 2 2D graphics and animation, Chapter 2 of android Category: C #, Android, VS2015; Created on: 1. Introduction The Android system defines a series of independent graphic processing classes. The 2D graphic processi

[TOC]#0x00 Preface# #不知所以然, take a lookAndroid Reverse-android base reverse (1)Android Reverse-android base reverse (2)# #以及java系列:Android Reverse-java Code Basics (1)Android Reverse-java Code Basics (

Step by step, develop the first Android project as shown in the figure below and run the Android-Android development example tutorial 2 and the first android program.1. generate an Android Application Project 1.run eclipse.exe

resolutions. Android supports both XML drawables and 9-patch graphics files. XML drawables are used to describe shapes (color, border, gradient), State, and transitions. 9-The patch graphic file is used to expand the entire image. For example, if a file acts as the background image of the button, the background image will also become larger when the button becomes large, then the image will naturally become blurred, and 9-patch can define a region fo

[Simple introduction] JAVA and Android 2-boring, Android 2- Next to the failed interview, let's talk about JAVA today! In fact, we use more android APIs in the mainstream android development process. Actually, there are not many J

Old Deng's android Study Notes (2)-Android gets screen resolutions in N ways, android-android Android gets the screen resolution Method 1: the simplest method 12 intscreenWidth=getWindowManager().getDefaultDisplay().ge

Android 2.x uses the theme 4. x and Android 2.x4.x. Currently, most Android Developers use Android APP 2. x SDK version, to be compatible with 2